Main Body ECU Communication Stop Mode: Procedure

1. Turn the ignition switch off.
   Fig 1: Identifying Terminal CANL And CANH Of Main Body ECU Connector

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2. Disconnect the main body ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   E63-23 (CANH) - E63-22 (CANL)	Ignition switch off	54 to 69 Ω

NG → REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (MAIN BODY ECU BRANCH WIRE) 

OK: Go to next step 

1. Disconnect the instrument panel junction block connectors.
   Fig 2: Identifying Terminal BECU And GND1 Of Main Body ECU Connector

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2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E63-1 (GND1) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E63-6 (BECU) - Body ground	Always	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)